The parts mark-up is either insanely high or little of nothing. If you find a decent mechanic, he should have no problem accepting parts you purchase. If he recommends OEM parts, he will more than likely buy from the stealership and mark them up 20-40% if not more. You can buy the same OEM part for a lot less. He may not warrant the parts or labor but you should be able to do this. Owner Operators bring in their own parts all the time and I could care less about that. 9x out of 10.......they will mark the labor up to cover their markup on parts to make a lil extra cash from the customer supplying parts.

I say you should atleast ask if it would be ok with you purchasing parts.

Lowriders are for guys who can't get it up!
Sissy's drive 2wd's! (you know who you are!!)

Thats not that bad, I'd try and fix it myself, measure the other(good) side, and bend the bent side back to the same size as the good side. If you have the money, I'd replace the control are for good measure though.